Conversion
(Appropriate references can found in the section above.) Gas mark 1 is 275° fahrenheit (135° celsius). Oven temperatures increase by 25°F (13.9°C) each time the gas mark increases by 1. Below gas mark 1 the scale markings halve at each step, each representing a decrease of 25°F.
| Gas mark | Fahrenheit | Celsius | Descriptive |
|---|---|---|---|
| 1⁄4 | 225° | 107° | Very Slow/Very Low |
| 1⁄2 | 250° | 121° | Very Slow/Very Low |
| 1 | 275° | 135° | Slow/Low |
| 2 | 300° | 149° | Slow/Low |
| 3 | 325° | 163° | Moderately Slow/Warm |
| 4 | 350° | 177° | Moderate/Medium |
| 5 | 375° | 191° | Moderate/Moderately Hot |
| 6 | 400° | 204° | Moderately Hot |
| 7 | 425° | 218° | Hot |
| 8 | 450° | 232° | Hot/Very Hot |
| 9 | 475° | 246° | Very Hot |
Different manufacturers and oven types do vary, so this table cannot be relied upon; instead, cooks should refer to the cooker instruction book for the oven type used, or calibrate the scale using an oven thermometer.
Read more about this topic: Gas Mark
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